Air heat transfer to provide a heating source for a community heating scheme. Apparently it uses 100 tons of sand .. I've not done any numbers but even at 500°c I'm not sure the stored heat would do more than supplement winter heating for a community. Unfortunately these projects get filtered through our wonderful media who value 'feel-good' over fact at best and reflect the uniformed enthusiasms of the writer at worst.
Those running these 'proof of concept' projects must wince at them being publicly trumpeted as world-savers.
K
